searchBookByTitle, filtering on title with spring

[keen plover]

So i basically have to filter on the title of a book on this site
i made these functions but i cannot see the reason for the errors on the console on the site. im not allowed to change the javascript btw

[light ginkgo]

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[keen plover]

console returns it

but

so basically only that book should be displayed there

this is the java for that error

I tried several things but im really confused what i need to focus on

[chrome condor]

The spread operator in js requires an iterable to spread

Since you're returning a single object, that's not iterable and you get an error

So return a list of objects

[keen plover]

indeed, i had to retur na list

I made it into a list, and it worked

thank you !

[light ginkgo]

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